In Selenium, **Actions** and **Action** refer to two related but different concepts.
**`Actions` (plural)** is a class.
You use it to *build* complex user interactions by chaining steps together.
Examples include hovering, clicking, drag-and-drop, key combinations, or any multi-step gesture.
```java
Actions actions = new Actions(driver);
actions.moveToElement(element)
.click()
.perform();
```
Here, each method call adds a step. When you call `perform()`, Selenium executes the entire sequence.
**`Action` (singular)** is an interface.
When you call `build()` on an `Actions` object, Selenium compiles the sequence into a single executable object of type `Action`.
```java
Action hoverAction = actions.moveToElement(element).build();
hoverAction.perform();
```
You normally use `Action` only if you need to store the built interaction and run it later. Most automation code uses `Actions` directly because it’s more convenient for chaining.
In simple terms:
* **`Actions` is the builder where you define what to do.**
* **`Action` is the final compiled interaction that actually gets executed.**
If you're preparing for Selenium interviews, this resource has more examples and explanations: Selenium Interview Questions